<template>
    <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
        <el-row>
            <el-col>
                <el-button type="primary">添加角色</el-button>
            </el-col>
        </el-row>
        <el-table :data="roleList" stripe border>
            <el-table-column type="expand" v-slot="scope">
                <el-row :class="['bdbottom',i1 === 0 ?'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                    <el-col :span="5">
                        <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="19">
                        <el-row :class="[i2===0?'bdtop':'','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                            <el-col :span="6">
                                <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="18">
                                <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">
                                    {{item3.authName}}
                                </el-tag>
                            </el-col>
                        </el-row>
                    </el-col>
                </el-row>     
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="角色名称" prop="roleName"></el-table-column>
            <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
            <el-table-column label="操作"  width="300px" v-slot="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
                <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </el-table-column>
            
        </el-table>
    </el-card>

    <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
    <el-tree :data="rightList" :props="treeProps" show-checkbox node-key="id" :default-expand-all="true" :default-checked-keys="defKeys" ref="treeRef"></el-tree>
    <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
    </span>
    </el-dialog>

    </div>
</template>
<script>
    export default{
        data(){

            return {
               roleList:[],
               setRightDialogVisible:false,
               rightList:[],
               treeProps:{
                   children:"children",
                   label:"authName"
               },
               defKeys:[],
               roleId:'',

            }
        },
        created(){
            this.getRoleList();

        },
        methods:{
            async getRoleList(){
                const {data:res} = await this.$http.get('roles');
                if(res.meta.status!==200) this.$message.error("获取角色列表失败");
                this.roleList = res.data
            },
            async removeRightById(role,rightId){
                const confirmResult = await this.$confirm("此操作永远角色权限，是否继续","提示",{
                    confirmButtonText:"确定",
                    cancelButtonText:"取消",
                    type:"warning"
                }).catch(err=>err)
                if(confirmResult!=="confirm"){
                    return this.$message.info("已经取消删除");
                }
                const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`);
                if(res.meta.status!==200) this.$message.error("删除角色权限失败");

                role.children = res.data
            },
            async showSetRightDialog(role){
                this.roleId = role.id;
                const {data:res} = await this.$http.get("rights/tree");
                if(res.meta.status!==200) this.$message.error("获取角色权限失败");
                this.rightList = res.data;
                this.getLeafKeys(role,this.defKeys);
                this.setRightDialogVisible = true;

            },
            getLeafKeys(node,arr){
                if(!node.children){
                    return arr.push(node.id);
                }
                node.children.forEach(element => {
                    this.getLeafKeys(element,arr)
                });
            },setRightDialogClosed(){
                this.defKeys=[];
            },async allotRights(){
                const key  = [
                    ...this.$refs.treeRef.getCheckedKeys(),
                    ...this.$refs.treeRef.getHalfCheckedKeys()
                ] 
                console.log(key)
                const idStr = key.join(',')
                const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr});
                if(res.meta.status!==200) this.$message.error("分配角色权限列表失败");
                this.$message.success("分配角色权限成功");
                this.getRoleList();
                this.setRightDialogVisible = false;
            }
        }
    }
</script>

<style lang="less" scoped>
    .el-tag{
        margin: 7px;
    }
    .bdtop{
        border-top:1px solid #eee;
    }
    .bdbottom{
        border-bottom:1px solid #eee;
    }
    .vcenter{
        display: flex;
        align-items: center;
    }
</style>